County profile · official public datasets

Mahoning County, OH

348 public highway bridges tracked in the FHWA National Bridge Inventory: 56.6% rated Good, 38.5% Fair, 4.9% Poor.

348
Public bridges
56.6%
Good condition
4.9%
Poor condition

The verdict

According to the Federal Highway Administration's 2024 National Bridge Inventory.

Mahoning County pairs a higher-than-median Poor-condition share among rated counties in the state with an older average build year than the state inventory.

47th
of 88 on Poor share
4.9%
Poor-condition share
348
public highway bridges
1967
avg year built

Poor is an FHWA condition category from the lowest applicable component rating (4 or below), not a live crossing-safety or closure decision. Rankings cover counties with at least five public highway bridges.

Mahoning County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Mahoning County ranks #47 of 88 Ohio counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 4.9%). Mahoning County, Ohio contains 348 public highway bridges. Roughly 56.6% are rated “Good,” 38.5% “Fair,” and 4.9% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

Total bridges

348

Public highway bridges in Mahoning County

Good condition

56.6%

197 of 348 rated 7-9

Fair condition

38.5%

134 of 348 rated 5-6

Poor condition

4.9%

17 of 348 rated 4 or below

In-state Poor-share rank

#47 of 88

Among Ohio counties with 5+ bridges, lower share ranks better

Condition distribution

Share of 348 NBI-tracked bridges by lowest applicable component rating.

Good
56.6% (197)
Fair
38.5% (134)
Poor
4.9% (17)

Mahoning County's Poor-condition bridges carry 54,719 vehicle crossings a day

That is 1.8% of the county's reported daily bridge traffic on 4.9% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 3,219 crossings a day against 10,287 for a Good-condition one. A Poor rating is a condition category, not a closure or a live safety judgement; it means the lowest applicable component rating is 4 or below.

Computed over the 348 of 348 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

74.4% of Mahoning County's bridges have passed the 50-year mark

259 of the 348 bridges with a recorded construction year were built in 1974 or earlier. Age alone is not a defect: a well-maintained older bridge can rate Good, and 56.6% of this county's inventory does. Even so, this older cohort is the population from which future Poor ratings are drawn, which is why the age profile below matters alongside the condition split above.

Cutoff derives from the 2024 release year minus a 50-year design life. Source: FHWA National Bridge Inventory, 2024 release.

One structure carries 30% of the county's Poor-condition bridge traffic

WESTERN RESERVE over YELLOW CREEK, built 1939, carries 16,431 vehicles a day, the most of any Poor-rated structure here. The county's Poor-condition exposure is concentrated rather than evenly spread, so the 17-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 54,719 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Mahoning County's bridges were built

348 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1960s, when 87 of the county's bridges still in the inventory were built, which is 25% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year is 1967, 10 years older than the Ohio average of 1977.

Source FHWA National Bridge Inventory (year built) As of 2024 NBI release

How Mahoning County compares with Ohio's closest counties by inventory size

The 5 Ohio counties nearest Mahoning County in number of bridges, with their condition splits. Its 4.9% Poor share is the 3rd-lowest of these 6. Its average build year of 1967 against a peer-group mean of 1975 is 8 years older.

Showing the 5 closest of 87 Ohio counties eligible for comparison.

Bridge inventory size and condition shares for Mahoning County and the 5 Ohio counties closest to it in inventory size
County Bridges Poor
Richland County 356 6.2%
Ross County 356 7.9%
Guernsey County 350 9.1%
Mahoning County (this page) 348 4.9%
Greene County 344 2.9%
Clark County 340 0%

Each share is of that county's own total tracked bridges; peers are the counties with 5 or more bridges whose inventory size is closest to Mahoning County's. Source: FHWA National Bridge Inventory, 2024 release.

Nationwide counties with similar inventory size or average build year

Two NBI-derived peer sets for Mahoning County, both outside Ohio so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside OH (348 bridges here).

Similar average build year

Nearest mean year-built outside OH (1967 here).

Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.

All 348 Good 197 Fair 134 Poor 17

Good-condition bridges (197)

I.R. 76

Good

Over: NS RR & MORRISON RUN

0.60 MI W OF SR 45, Mahoning, OH

Built 1968 Load: 35.6 t ADT: 17,863

I.R. 76

Good

Over: NS RR & MORRISON RUN

0.60 MI W OF SR 45, Mahoning, OH

Built 1968 Load: 35.6 t ADT: 17,863

US 224

Good

Over: BERLIN RESERVOIR

2.78 MI W OF SR 534, Mahoning, OH

Built 1943 Load: 35.6 t ADT: 3,755

US 224

Good

Over: OVER MAH-IR-680-11.81

0.60 MI W OF SR 170, Mahoning, OH

Built 1974 Load: 35.6 t ADT: 25,813

US 62

Good

Over: OVER MAH-IR 680-6.61

0.02 MI E OF SR 62D, Mahoning, OH

Built 1963 Load: 35.6 t ADT: 2,792

CHESTNUT HILL DR

Good

Over: A W TRIBUTARY OF MILL CR

ON PK DR .25 MI N USR62, Mahoning, OH

Built 1900 Load: 35.6 t ADT: 300

MARSHALL STREET

Good

Over: MAHONING RIVER N S RAILR

BTW. OAK HILL & FRONT ST, Mahoning, OH

Built 2005 Load: 35.6 t ADT: 4,976

FIFTH AVENUE

Good

Over: CRANDALL RUN

0.6 MI. S. OF GYPSY LANE, Mahoning, OH

Built 1996 Load: 35.6 t ADT: 7,302

DRAKE AVENUE

Good

Over: SUGAR CREEK

0.2 MI. N. OF EAST HIGH, Mahoning, OH

Built 1990 Load: 35.6 t ADT: 325

US 62

Good

Over: OVER MAH-US 62-19.28 SR7

OVER US 62/SR 7, Mahoning, OH

Built 1969 Load: 36.0 t ADT: 11,612

US 62D

Good

Over: OVER SOUTH AVE CR-151

0.10 MI S OF SR 7D, Mahoning, OH

Built 1971 Load: 36.0 t ADT: 5,160

OH TPK EB

Good

Over: I76/80

0.4MI WEST OF EXIT 15, Mahoning, OH

Built 1970 Load: 36.3 t ADT: 13,956

MIDDLETOWN RD.

Good

Over: MILL CREEK

0.5MI.E OF S.R.534, Mahoning, OH

Built 1987 Load: 36.3 t ADT: 450

VALLEY DR 122

Good

Over: UNNAMED GORGE

ON PK DR .12 MI N USR 62, Mahoning, OH

Built 1925 Load: 36.3 t ADT: 500

US 62

Good

Over: ANDERSON RUN

1.82 MI W OF SR 625, Mahoning, OH

Built 1990 Load: 36.9 t ADT: 7,112

BELLE VISTA AVENUE

Good

Over: IR 680

0.94 MI E OF SR 711, Mahoning, OH

Built 1967 Load: 36.9 t ADT: 6,600

US 224

Good

Over: TURKEY BROTH CREEK

0.36 MI W OF SR 534, Mahoning, OH

Built 1990 Load: 37.9 t ADT: 3,755

I.R. 680

Good

Over: OVER US 62D & SR 7D

JCT OF IR 680 AND US 62, Mahoning, OH

Built 1963 Load: 38.2 t ADT: 35,866

ELLSWORTH RD.

Good

Over: MILTON RESERVOIR

0.5MI.W OF S.E.RIVER RD., Mahoning, OH

Built 1988 Load: 38.2 t ADT: 1,171

TPK EXIT 218 RAMP

Good

Over: IR 76/IR 80

UNDER TURNPIKE RAMP A, Mahoning, OH

Built 1968 Load: 38.6 t ADT: 11,293

I76 OH TPK

Good

Over: COLUMBIANA RD

0.6MI WEST OF EXIT 17, Mahoning, OH

Built 1954 Load: 38.6 t ADT: 12,526

SR 165

Good

Over: MILL CREEK

1.10 MI W OF SR 164, Mahoning, OH

Built 2013 Load: 38.9 t ADT: 5,454

SILLIMAN STREET

Good

Over: IR 680

0.11 MI W OF SR 193, Mahoning, OH

Built 1963 Load: 38.9 t ADT: 4,150

SR 289D

Good

Over: HIMROD AVE OVER US62&SR7

4.66 MI W OF SR 616, Mahoning, OH

Built 1980 Load: 38.9 t ADT: 2,354

NB SR 11

Good

Over: I76 OHIO TPK

6.4 MI WEST OF EXIT 14, Mahoning, OH

Built 1970 Load: 38.9 t ADT: 17,407

BEARS DEN ROAD

Good

Over: KIRKMERE CREEK

BTW. ROSEWAE & NRMNDY DR., Mahoning, OH

Built 1999 Load: 38.9 t ADT: 6,692

PRICE ROAD MR1200

Good

Over: MILL CREEK

BELOW MAHONING AVE. BRG., Mahoning, OH

Built 1997 Load: 38.9 t ADT: 8,624

SR 164

Good

Over: OVER MAH IR680

SR164 over IR680, Mahoning, OH

Built 2016 Load: 39.5 t ADT: 7,700

MARKET STREET

Good

Over: I-680

0.28 MI W OF US 62/SR 7, Mahoning, OH

Built 1963 Load: 39.9 t ADT: 14,325

SR 165

Good

Over: YELLOW CREEK

0.85 MI E OF SR 7, Mahoning, OH

Built 1989 Load: 39.9 t ADT: 2,302

I76 OH TPK

Good

Over: KIRK RD

3.4MI EAST OF EXIT 15, Mahoning, OH

Built 1954 Load: 39.9 t ADT: 21,182

I76 OH TPK EB

Good

Over: TIPPECANOE RD

4.5MI WEST OF EXIT 16, Mahoning, OH

Built 1954 Load: 40.5 t ADT: 10,672

I76 OH TPK

Good

Over: POLAND-UNITY RD

0.9MI WEST OF EXIT 17, Mahoning, OH

Built 1954 Load: 40.8 t ADT: 12,526

US 422

Good

Over: US 422

US 422 OVER 422/MLK AVE, Mahoning, OH

Built 1967 Load: 41.1 t ADT: 11,045

SR 626

Good

Over: YELLOW CREEK

0.26 MI N OF SR 165, Mahoning, OH

Built 1990 Load: 41.1 t ADT: 4,082

I.R. 680

Good

Over: OVER WATER MAIN R/W MVSD

0.40 MI E OF IR 80, Mahoning, OH

Built 1967 Load: 41.1 t ADT: 16,756

I76 OH TPK

Good

Over: TURNER RD

3.3MI EAST OF EXIT 15, Mahoning, OH

Built 1954 Load: 41.1 t ADT: 20,869

SR 289

Good

Over: GRAYS RUN

2.62 MI E OF SR 616, Mahoning, OH

Built 1997 Load: 41.5 t ADT: 1,706

I76 OH TPK WB

Good

Over: SHARROTT RD

0.9MI WEST OF EXIT 16, Mahoning, OH

Built 1954 Load: 41.5 t ADT: 8,200

I76 OH TPK EB

Good

Over: MEANDER RES&RD

1.9MI EAST OF EXIT 218, Mahoning, OH

Built 1954 Load: 41.8 t ADT: 9,975

I76 OH TPK WB

Good

Over: MEANDER RES&RD

1.9MI EAST OF EXIT 218, Mahoning, OH

Built 1954 Load: 41.8 t ADT: 9,975

SOUTH AVE / SR164

Good

Over: I76 OHIO TURNPIKE

1.2 miles east of SR 7, Mahoning, OH

Built 2019 Load: 41.8 t ADT: 12,310

SR 11

Good

Over: OVER NORQUEST BLVD CR-28

1.46 MI S OF IR 80, Mahoning, OH

Built 1970 Load: 42.1 t ADT: 19,149

SR 11

Good

Over: OVER NORQUEST BLVD CR-28

1.46 MI S OF IR 80, Mahoning, OH

Built 1970 Load: 42.1 t ADT: 19,149

IR 80 WB

Good

Over: MEANDER RESERVOIR

2.56 MI W OF SR46, Mahoning, OH

Built 2009 Load: 42.1 t ADT: 25,070

IR 80

Good

Over: MEANDER RESERVOIR

2.56 MI W OF SR46, Mahoning, OH

Built 2007 Load: 42.1 t ADT: 25,070

US 224

Good

Over: MILL CREEK

0.80 MI E OF SR 625, Mahoning, OH

Built 1961 Load: 42.1 t ADT: 36,090

SR 531

Good

Over: MILL CREEK

1.50 MI N OF SR 14, Mahoning, OH

Built 1947 Load: 42.1 t ADT: 2,826

SR 616

Good

Over: DRY RUN

0.04 MI S OF US 422, Mahoning, OH

Built 2014 Load: 42.1 t ADT: 3,029

I76 OH TPK EB

Good

Over: GARFIELD RD

2.1MI EAST OF EXIT 17, Mahoning, OH

Built 1954 Load: 42.1 t ADT: 12,526

Read our methodology - how this data is sourced, computed, and verified.

Related

Browse all → | Rankings →
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.